Core Principle:Automobile Balance BlockHow To 'offset Imbalance'? ——Balance "centrifugal Force" With "counterweight"

The Essence Of A Balance Block Is A "controllable Counterweight", Which Adds A Weight Equal To The "unbalanced Mass" Opposite The Unbalanced Point Of The Wheel, And Uses "reverse Centrifugal Force" To Counteract The Shaking Caused By The Imbalance, Achieving "dynamic Balance". Specifically, It Can Be Broken Down Into Three Key Steps:

Step 1: Check The Position And Weight Of The "imbalance Point" (dependent On The Dynamic Balancing Machine)

The Wheel Balancing Machine Locates The Imbalance Point Through The Following Methods:

Fix The Wheels On The Rotating Shaft Of The Machine And Simulate The Rotational State Of The Vehicle While Driving;

The Sensors On The Machine Will Detect The "vibration Amplitude" And "vibration Direction" When The Wheels Rotate, And Calculate Two Key Data:

Imbalance Position: Which Angle On The Circumference Of The Wheel (such As The "3 O'clock Direction" Or "9 O'clock Direction") Has A Mass Imbalance;

Unbalanced Weight: What Is The Heavy Weight Of The Position (such As 10g, 15g).

For Example, It Was Found During Testing That The "12 O'clock Direction Of The Wheel" Is Biased By 15g, Which Means That The Centrifugal Force In This Direction Is Greater Than In Other Directions, Causing The Wheel To "pull" Upwards And Produce Up And Down Vibrations.

Step 2: Install A Balance Block On The Opposite Side Of The Imbalance Point (core Operation)

In Order To Counteract The "15g Bias In The 12 O'clock Direction", A 15g Balance Block Needs To Be Installed Directly Opposite It (in The 6 O'clock Direction) - The Principle Is:

When The Wheels Rotate, The "heavy Mass" In The 12 O'clock Direction Generates An Upward Centrifugal Force (F1);

The "balance Block" In The 6 O'clock Direction Generates A Downward Centrifugal Force (F2);

Due To The Equal Size (mass And Rotation Radius, Centrifugal Force Formula F=mr ω ², M, R, ω Are All The Same) And Opposite Direction Of F1 And F2, They Will Cancel Each Other Out, And The Overall Centrifugal Force Of The Wheel Tends To Balance, No Longer Producing Shaking.

Note: In Practical Operation, Imbalance May Exist On Both The "inner Side" And "outer Side" Of The Wheel (such As A 10g Bias In The 3 O'clock Direction On The Inner Side And A 5g Bias In The 9 O'clock Direction On The Outer Side). Therefore, It Is Necessary To Install A 10g Balance Block On The Inner Opposite Side (9 O'clock) And A 5g Balance Block On The Outer Opposite Side (3 O'clock) To Offset The Imbalance On Both Sides.

Step 3: Verify The Balance Effect (ensure Complete Cancellation Of Centrifugal Force)

After Installing The Balance Block, The Wheels Need To Be Returned To The Dynamic Balancing Machine For Rotation Detection:

If The Machine Displays "Remaining Unbalance ≤ 5g" (sedan Standard), It Indicates That The Weight And Position Of The Balance Block Are Accurate, The Centrifugal Force Has Been Basically Offset, And The Wheels Have Reached A "dynamic Balance" State;

If There Is Still A Deviation (such As 10g Remaining), The Position Of The Balance Block Needs To Be Fine Tuned (such As Offset By 5 °) Or The Weight Needs To Be Adjusted (such As Using 15g Instead Of 10g) Until The Standard Is Met.